Date: Sun, 3 Oct 2010 23:05:59 GMT From: Tobias Herre <tobias.herre@srh-hochschule-berlin.de> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/151186: routed turns RIP off if just one network card is present Message-ID: <201010032305.o93N5xHa054057@www.freebsd.org> Resent-Message-ID: <201010032310.o93NA4Bv083796@freefall.freebsd.org>
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>Number: 151186
>Category: misc
>Synopsis: routed turns RIP off if just one network card is present
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Oct 03 23:10:04 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator: Tobias Herre
>Release: FreeBSD 8.1 / 5.5 / 7.x
>Organization:
SRH Hochschule Berlin
>Environment:
FreeBSD grusel 8.1-STABLE FreeBSD 8.1-STABLE #1: Thu Sep 16 13:40:46 UTC 2010 root@grusel2.otauni.de:/usr/obj/usr/src/sys/SRHPOWER amd64
>Description:
route daemon (routed -q) turns RIP off if just one network adapter exists.
>How-To-Repeat:
Take two machines connect them via a switch.
First machine is called router, has gateway_enable="YES"
and shows the following interfaces
router# ifconfig
bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE>
ether 00:50:45:5d:9a:bc
inet 192.168.1.158 netmask 0xffffff00 broadcast 192.168.1.255
media: Ethernet autoselect (100baseTX <full-duplex,flag0,flag1>)
status: active
bge1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE>
ether 00:50:45:5d:9a:bd
inet 192.168.17.17 netmask 0xffffff00 broadcast 192.168.17.255
media: Ethernet autoselect (none)
status: no carrier
..
and the second machine called client:
client# ifconfig
bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE>
ether 00:50:45:5d:c6:ec
inet 192.168.1.157 netmask 0xffffff00 broadcast 192.168.1.255
media: Ethernet autoselect (100baseTX <full-duplex,flag0,flag1>)
status: active
bge1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE>
ether 00:50:45:5d:c6:ed
media: Ethernet autoselect (none)
status: no carrier
..
in this case the second machine (client) has two network adapters but bge1 has no ip assigned and is down.
Now on the router start the route daemon:
router# /sbin/routed -s -d -t
-- 10:43:21 --
Tracing actions started
Add interface bge0 192.168.1.158 -->192.168.1.0 (mask 0xffffff00)
RCVBUF=61440
turn on RIP
Add interface bge1 192.168.17.17 -->192.168.17.0 (mask 0xffffff00)
Add interface lo0 127.0.0.1 -->127.0.0.1 (mask 0xffffffff) <LOOPBACK> <PASSIVE>
Add 127.0.0.1 (mask 0xffffffff)-->127.0.0.1 metric=0 lo0 <IF>
Add 192.168.17.0 -->192.168.17.17 metric=0 bge1 <IF>
Add 192.168.1.0 -->192.168.1.158 metric=0 bge0 <IF>
-- 10:43:21 --
ignore RTM_NEWMADDR for AF 173
ignore RTM_NEWMADDR for AF 173
ignore RTM_NEWMADDR without dst
ignore RTM_NEWMADDR without dst
-- 10:43:26 --
send all routes and inhibit dynamic updates for 4.884 sec
and on the client:
client# /sbin/routed -d -q -t
-- 10:45:36 --
Tracing actions started
Add interface bge0 192.168.1.157 -->192.168.1.0 (mask 0xffffff00)
RCVBUF=61440
turn on RIP
Add interface lo0 127.0.0.1 -->127.0.0.1 (mask 0xffffffff) <LOOPBACK> <PASSIVE>
Add 127.0.0.1 (mask 0xffffffff)-->127.0.0.1 metric=0 lo0 <IF>
Add 192.168.1.0 -->192.168.1.157 metric=0 bge0 <IF>
-- 10:45:36 --
ignore RTM_NEWMADDR for AF 172
-- 10:45:36 --
Add #1 192.168.1.0 -->192.168.1.158 metric=1 bge0 10:45:36
Add 192.168.17.0 -->192.168.1.158 metric=1 bge0 10:45:36
-- 10:45:37 --
turn on Router Discovery client using 192.168.1.158 via bge0
Add 0.0.0.0 -->192.168.1.158 metric=15 bge0 <RDISC>
turn off RIP
Del 192.168.17.0 -->192.168.1.158 metric=1 bge0 10:45:36
As not expected the route to net 192.168.17.0 is deleted immediately and
RIP is turned off.
Brining up the second interface on the client lets routed work as expected:
client# ifconfig bge1 192.168.18.18
client# ifconfig bge1 up
client# /sbin/routed -d -q -t
-- 10:51:12 --
Tracing actions started
Add interface bge0 192.168.1.157 -->192.168.1.0 (mask 0xffffff00)
RCVBUF=61440
turn on RIP
Add interface bge1 192.168.18.18 -->192.168.18.0 (mask 0xffffff00)
Add interface lo0 127.0.0.1 -->127.0.0.1 (mask 0xffffffff) <LOOPBACK> <PASSIVE>
Add 127.0.0.1 (mask 0xffffffff)-->127.0.0.1 metric=0 lo0 <IF>
Add 192.168.18.0 -->192.168.18.18 metric=0 bge1 <IF>
Add 192.168.1.0 -->192.168.1.157 metric=0 bge0 <IF>
-- 10:51:12 --
ignore RTM_NEWMADDR for AF 172
ignore RTM_NEWMADDR without dst
-- 10:51:12 --
Add #1 192.168.1.0 -->192.168.1.158 metric=1 bge0 10:51:12
Add 192.168.17.0 -->192.168.1.158 metric=1 bge0 10:51:12
-- 10:51:13 --
turn on Router Discovery client using 192.168.1.158 via bge0
Add 0.0.0.0 -->192.168.1.158 metric=15 bge0 <RDISC>
>Fix:
Workaraound: install and configure a second network adapter and bring it up.
Or apply the patch.
Patch attached with submission follows:
--- sbin/routed/rdisc.orig 2010-09-22 11:02:00.040741231 +0000
+++ sbin/routed/rdisc.c 2010-10-03 22:37:08.280021020 +0000
@@ -557,7 +557,7 @@
}
/* turn RIP on or off */
- if (!rdisc_ok || rip_interfaces > 1) {
+ if (!rdisc_ok || rip_interfaces >= 1) {
rip_on(0);
} else {
rip_off();
>Release-Note:
>Audit-Trail:
>Unformatted:
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